Process of making duplicate sound-records.



No. 855,555. I PATENTED JUNE 4 190?. J. W. AYLSWORTH.

PROCESS OF MAKING DUPLICATE SDUND REGORDS.

APPLICATION TILED MAY 31, 1906. RENEWED APR. 4, 1907.

ess for mal igmrrnn srlrrns earner iiiiliitjhi,

JOi

AYLSEVORTH, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO NEW JERSEY PATENT COMPANY, OF WEST ORANGE, NEW JERSEY, A CORPO- .iUN NEW JERSEY.

No. ceases.

To all whom, it may concern.-

Be it known that I, JONAS W. AYLsWoR'rH, citizen of the United States, residing at 223 Midland avenue, East Orange, county ofEssex, and State of New Jersey, have invented a certain new and useful Process for Making Duplicate Sound-itecords, of which the fol: lowing is description.

Ely invention relates to an improved prod" r1 duplicate sound records of celluloid, 1. din, collodion, cellulose, and other suitable materials not capable of being rendered molten so as to be cast, but dissolving readily in solvents, and in that condition being readily manipulated. I am, of course, aware that duplicate sound records have been made of celluloid and similar materials by the application of heat and pressure, but

"ith such process it been found impossible. to obtain a smooth surface, so that the records are rough and scratchy. Furthermore, the material in being pressed into e11- gagcment with the record surface becomes merely distorted so as to conform with more or less exactitude with the irregularities thereof, and there is therefore always a tendency for the material to revert to its original condition, thereby resulting in a gradual erealrening oi the record surface. it has also been 1)1(")( 50Ll to make records of pyroicylin or sim or materials by dipping a mold or matri in a solution of the material to form a iilm from which the solvent is allowed to 0V jun-ate, but such a lilm is manifestly excessively thin, and hence diilicult to handle and to properlv support. Obviously, if it were attempted to build up a record of greate thickness by repeating the dipping opei ti the outer iilms would be likely to peel oil, e during manufacture the film or filin already deposited Within the matrix would be dissolved more or less by the solvent so that the operation would be neces- 'ily slow ano expensive. V y ii -ention relates to an improved method by which records can be made of the materials under consideration in a very cheap and efi'ective manner by an operation strictly analogous to a true casting recess, so that go there will be no tendency o the re'bbrd stirface to become chan ed in use, while at the same t me the recoru surface tell be smooth and bll lilitl'lt, and furthermore, thereco'rd' of reference.

Specification of Letters Patent.

Application filed May 31, 1906. Renewed April 4, 190']. Serial No.

T'Patented June 5;, 1907.

Will be perfectly homogeneous throughout and of any desired thickness 1 The process consists in rotating a matrix or mold at a high speed, and in introducing within the same a solution. of the desired solid material, such as celluloid or pyroxylin, or compounds employing the same, whereby the centrifugal force developed will cause the solution to distribute itself uniformly over the bore of the matrix, thereby driving T air bubbles inward and causing the solution to intimately engage the record surface, so as to fill all the irregularities of its coiitour. After the solution has been thus distri iruted over the bore of the matrix so est-o take an accurate impression from the record thereof, the solvent is eithcr permitteo to evaporate or is forcibly evaporated so as to deposit the solid material as ahomogeneous cylindrical body with an absolutely accurate in pression of the record surface molded on lts exterior. Preferably, the evaporation of the solvent is facilitated by a blast of hot air, from Which the solvent can be evaporated by condensation so as to permit the process to be carried on economically. After the rec-- ord has been formed Within the matrix, it is separated therefrom, preferably by immersing the matrix With its contents in hot Water so as to permit the duplicate to be readily stripped out by collapsing it inward or by subgecting the matrix to sufllcient cold to Fig. cross sectional matrix, illustrating one Way of removing the finished record.

In all of the above views, corresponding parts are represented by the same numerals The matrix 1 by a process of vacuous known in the art.

is formed in any suitable I Way from a master record, but preferably,

I nest solvent more rapidly.

with on ond iliingo 2, Whioh n'n'ty be. i or romovablo, asv desired, and which L4 carrv suitably engraved DHLHQI or i l l the reoord, horetol'oro. 6'- }1OV1.$lO11 is magic for rotating the matrix 1 tho necrosary speed, for instance, a ohuol; :3 carried by t hollow shaft 4, the latt r being mounted in a suitable bore 5 and rota rod in, 2t pulley 6. The chuck 3 or shown, forms a closure for the. matrix at its In order to introrluoo o solid; tho inst l. show a tank a nozzle :5 into the matrix and prov: =1. vzilrr- 9 for o(mtrollin g the flow r Preferably; provision made for evaporating the solvent, after the soh has been uniiiirmly dis 'ribiited over tho oi the mold and time has been allowed io dispersion of all air bubbles. For this 5 "pose 1 illustrate a fan or -BlOWOI l0, cord witl'i a chamber 11, lHi-VlD an o it '52, leading to the matrix and limited in suitable Way, as l'or exinnple, by s l. coil 13, whereby the air before ouol'iingl mo matrix will be heated so to drive oil the the pose, now; provnlod may he orrnngml adj: i. FPZLU Y and connected with a suitable Suppl oil warrn or hot air, so as to heat the matrix and lmrilitnio tho drivin oil o'l" tho solvont. l'l hen it is do oil to reocwor the solvont d ring the )"QCQSS, l cmuloy :1 'nlonsor l5 nootod the hollow sho 4' lay a so or .l jOUzi i6 .nnl prlwidod w 3T, lwrcntn tho oonor wont sop: mlod by tho sumo as ismonnnon in tho art of 11 L ho recm'oroi tillation. .l. desired, it suction fan 13. n

ho connected to tho condonser as to l t: o the circulation oil hot air and tho 1,-

iilcsolvent uorriod therewith but this soc 1 l 7 "1f dispensed will. til it snlii pro or 7 with for .tono, nlthou l L Liti may be oznolrrgxod with i pioprr soltont for the 52 no, or tho in orinl may oo inoro or loss adult" All various cheaper sulisunn in .i czislor oil or minplior, or av number ol so n materials may in: employed logothcr so long a solution of the some can on secured The solution nood not be vrry limpid, but at tho same time onro should ho taken not to have it too void, so as to ilow with dill oulty and hill to take a clear and sharp inrpro -on oi' the record snrl'znw. A. solution inning; about lho consistency of inolzisws charge of the).

solution to outer to its liquid form, tho

2: soilioir tho inst :olut" rl's'irilnitod by tho centrifugal irmly over the entire bore of the l, so as to intimately 'onzrao and ifllii nrp imprrssion of thorecoi it'faor.

ir bubbles which may the solution will be l, so that the record Free 'lioni any ronghnoss, and ,isolotoly accurate co l of the i tho solution in introduced. nmtriic, the latter is preferably 1 at or holow tho room tomoorrv *rinit the s 1 tion to :oino

ihotod, as oriplainod, "l

iifzilliiilflll ol' the solvent A. or tho Instr-rigid hos boon ed over the bore of the nmtrix, is), will rw uiro only low glooond", :1 worm blast from the fan or lilowor l'l) \lYiYLY-L] through the ix and the latter also orolrruhly hm by the blast i i. This llts in the 7 oid evaporation of the solwhich will he carried oil with the hot air nd separated from tho donsor 15. The rated solvent collector} 1&11lil'7 may we used again in the make up of Iresh solutions. t l hen the solvent has boon entirely omiporzitod, the record 19 will 1 2 entrapped radially low surlooo will will s 1 tubular structure, nitin'mtely onth flnziti1;nndfollowingwithabsolnto tho contours and variations oi The thicknoss of hi will obviously do iono tho solution introduced till} ro fiord is provided with. thin onongh Walls o be Collapsed, tho nnitrix may h iiksl dippod. in hot water so to slightly s on tho jrorord and permit it to he col- \s'nrdlv shown in Fig. I), so as to Litcd iron]. tho nnitrix. ll, il mfmod with relatively thick 1 to be capable oi lasing rolwill", tho nnitlix may he suhfcrtod in: zillmx'ml to chill so as nose to Sli'i'll radinll amt noni the rmit of its iGlUOYill. .liQ-rords 'n this way can ho provided with s to porniit than: to ho 1nountto tzipoiod mandrel oi the phono ooh or thoy may ho mount-oil on also shells, irliioh in turn an earned on tho mandrel, both of which. orpodmnts are Woll known in tho art.

if, howm. r, tho phonograph is provided with M1 ozrponsililo mandrel, the record nmyho l dii tly thereon, sil'ioe it will he formed indrirzil l oro, as an inhoront result now tlosrribod my invontion, Whrt and desire to secure by loot l'ollows:

i making duplicate phono- -iicli oonsir hoot latter in the. con-' in rapidly ro- 1 o tating a matrix, in introducing therein a solution of a solid material, whereby the solution will distribute itself uniformly over the boreof the matrix and in then driving a blast of air through the matrix as itcontimies to rotate in order to evaporate the solvent from the solid material, substantially asset forth.

2. The process of making duplicate phonograph records, which consists in rapidly ro-. tating a matrix, in introducing therein a solution of a solid material, whereby the solu' tion will distribute itself uniformly over the bore of the matrix and in then driving a blast of warm air through the matrix as it con tinues to rotate in order to evaporate the solvent from'the solid material, substantially as set forth. i

3. The process of making duplicate phono- .graph records, which consists in rapidly ro- 'tating a matrix, 1n introducing therein a solution of a solid material, whereby the solution will distribute itself uniformly over the bore of the matrix, in then driving a blast of air through ,the matrix as it continues to rotate :in order to evaporate the solvent from the solid material, and in finally condensing the evaporated solvent, substantially as set forth.

4. The process of making duplicate phonograph records, which consists in rapidly rotating a matrix, in introducing therein a solution of a solid material, whereby the solu- 1 tion will distribute itself uniformly over the bore of the matrix, in then driving a blast of warm air through the matrix as it continues to rotate in order to evaporate the solvent from the solid material, and in finally con densing the evaporated solvent, substantially as set forth.

5. The process of making duplicatephonograph records, which consists in rapidly rotating the matrix, in introducing therein a solution of the solid material, whereby the latter will be distributed over the bore of the matrix by the centrifugal force developed, and finally in a plying heat to the matrix so as to facilitate tlie evaporation of the solvent, substantiallv as set forth.

6. The process 01 making duplicate phono gra'phrecords, which consists in rotating the mat x at a high speed, in introducing-therein a solution of a solid naterial, whereby the latter will be-clistributed over the bore of the matrix by the centrifugal force developed, in then heating the matrix and simultaneously 5 5 blowing a blast of air through ,the same so as to eva orate and carry off. the solvent, substantia ly as set forth,

' 7. Theprocess of making duplicate phonograph records, which consists in rotating the to matrix at a high speed, in introducing therein a solution of-a solid material, whereby the I latter will be distributed over the bore of the matrix by thecentrifugal force developed, in then heating the matrix-and simultaneously blowing a blast of warm air through the same so as to evaporate and carry off the solvent, substantially as set forth.

8. The processof making duplicate phonograp records, which consists in rotating the matrix at a high speed, in introducing therein a solution of a solid material, whereby the latter will be distributed over the bore of the matrix by the centrifugal force developed, in

then heating the matrix, in simultaneously 7 g.

blowing a blast of air throu h the same so as to evaporate and carry offv t e solvent and in condensing and separating the evaporated solvent, substantia y as set forth.

f 9. The process of making duplicate phono- 8o graph records, which consists in rotating the matrix at a high speed, in introducing therein a solution of'a solid material, whereby the, latter will be distributed over-"the bore of the matrix by the centrifugal force developed, in '85 then heating the matrix, in simultaneously blowing a blast of warm air through theis'ame so as to evaporate and carry off the's'olvent, and in condensip'gand se arating the evaporated solvent, "substantia ly as set forth.

. This specification signed and witnessed this 29th day'of May1906. 

